{"event":"ecommerce_event","event_name":"view_item","event_category":"browse_catalog","ecommerce":{"items":[{"item_id":"MFR348336","item_category2":"in_copyright","item_category3":"standard","item_category4":"metz_fl_c_1700","item_category5":"not_balown","item_list_name":"search_results","item_name":"dutch_surveying_circle_or_holland_circle_c_1700_brass","item_variant":"undefined"},{"item_id":"HUM351604","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"korean_school","item_category5":"not_balown","item_list_name":"search_results","item_name":"counting_sticks_joseon_dynasty_wood","item_variant":"undefined"},{"item_id":"MFR348348","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"bennett_john_fl_1760","item_category5":"not_balown","item_list_name":"search_results","item_name":"plain_theodolite_with_trade_card_on_inside_of_case_lid_c_1780_brass","item_variant":"undefined"},{"item_id":"XIR157811","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_17th_century","item_category5":"balown","item_list_name":"search_results","item_name":"calculating_machine_invented_by_blaise_pascal_1623_62_1644_metal_b_w_photo","item_variant":"undefined"},{"item_id":"BAL136314","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"plate_i_illustrating_law_ii_from_volume_i_of_the_mathematical_principles_of_natural_philosophy_by_si","item_variant":"undefined"},{"item_id":"XJF193898","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_16th_century_after","item_category5":"balown","item_list_name":"search_results","item_name":"a_genethliac_or_astrological_horoscope_from_science_and_literature_in_the_middle_ages_written_and_en","item_variant":"undefined"},{"item_id":"NUM42003","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_12th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"diagrams_of_measurements_and_text_vellum","item_variant":"undefined"},{"item_id":"XZL151817","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"balown","item_list_name":"search_results","item_name":"astrolabe_for_calculating_horoscopes_european_brass","item_variant":"undefined"},{"item_id":"XIR154000","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"byzantine_school_12th_century","item_category5":"balown","item_list_name":"search_results","item_name":"st_pachomius_d_346_mosaic","item_variant":"undefined"},{"item_id":"CHT171359","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"calculating_machine_invented_by_blaise_pascal_1623_63_in_1642_wood_and_metal","item_variant":"undefined"},{"item_id":"MFR348335","item_category2":"in_copyright","item_category3":"standard","item_category4":"wright_thomas_fl_c_1740","item_category5":"not_balown","item_list_name":"search_results","item_name":"surveyor_s_level_c_1740_brass","item_variant":"undefined"},{"item_id":"MFR348308","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"lodestone_in_fish_skin_leather_case_mixed_media","item_variant":"undefined"},{"item_id":"XIR158206","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"ibn_jusuf_abu_bakr_fl_1208_18","item_category5":"balown","item_list_name":"search_results","item_name":"astrolabe_1216_metal","item_variant":"undefined"},{"item_id":"MFR348317","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"adams_george_1750_95","item_category5":"not_balown","item_list_name":"search_results","item_name":"18_inch_hadley_quadrant_or_octant_c_1760_wood_brass_glass","item_variant":"undefined"},{"item_id":"BAL136311","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"plate_xx_from_volume_i_of_the_mathematical_principles_of_natural_philosophy_by_sir_isaac_newton_1642","item_variant":"undefined"},{"item_id":"GIA4784909","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"daschitzsky_jiri_16th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_great_comet_of_1577_above_prague_engraving_by_jiri_daschitzsky_this_comet_c_1577_v1_is_the_first","item_variant":"undefined"},{"item_id":"MFR348337","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"lodestone_magnetite","item_variant":"undefined"},{"item_id":"MFR348315","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"nairne_blunt_fl_1770s","item_category5":"not_balown","item_list_name":"search_results","item_name":"sextant_c_1780_brass","item_variant":"undefined"},{"item_id":"UIG5307700","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_merchant_and_his_clerk_using_a_calculating_table","item_variant":"undefined"},{"item_id":"MFR348329","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"adams_george_1750_95","item_category5":"not_balown","item_list_name":"search_results","item_name":"sextant_brass_wood_glass","item_variant":"undefined"},{"item_id":"ACD224657","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"report_of_the_sessions_at_the_academie_des_sciences_by_jean_joseph_le_verrier_1811_77_on_the_planet_","item_variant":"undefined"},{"item_id":"CHT164098","item_category2":"undetermined_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"ms_latin_11411_fol_99_pythagoras_sphere_vellum","item_variant":"undefined"},{"item_id":"BAL136312","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"proposition_x_problem_v_from_volume_i_of_the_mathematical_principles_of_natural_philosophy_by_sir_is","item_variant":"undefined"},{"item_id":"MFR348310","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"aboab_mordecai_semah_c_1707_55","item_category5":"not_balown","item_list_name":"search_results","item_name":"inclining_analemmatic_sundial_c_1750_brass","item_variant":"undefined"},{"item_id":"LLM2811406","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"jedediah_buxton_aetat_49_engraving","item_variant":"undefined"},{"item_id":"MFR348330","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"ramsden_jesse_1735_1800_fraser_william_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"bridge_type_sextants_c_1780_brass","item_variant":"undefined"},{"item_id":"XCC2972686","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"crespi_giuseppe_maria_lo_spagnuolo_1665_1747","item_category5":"balown","item_list_name":"search_results","item_name":"fragmentary_copy_1710_15_red_chalk_on_ivory_laid_paper","item_variant":"undefined"},{"item_id":"MFR348344","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"ramsden_jesse_1735_1800","item_category5":"not_balown","item_list_name":"search_results","item_name":"double_framed_bridge_sextant_c_1780_brass_wood","item_variant":"undefined"},{"item_id":"MFR348323","item_category2":"in_copyright","item_category3":"standard","item_category4":"hajji_ali_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"planispheric_astrolabe_copper_or_brass","item_variant":"undefined"},{"item_id":"MFR348327","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"dutch_school_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"graphometer_or_clinometer_brass_glass_steel","item_variant":"undefined"},{"item_id":"MFR348332","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"modern_replica_of_a_cross_staff_by_harriet_wynter_ltd_ivory_wood","item_variant":"undefined"},{"item_id":"MFR348309","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"lenoir_etienne_1744_1832","item_category5":"not_balown","item_list_name":"search_results","item_name":"reflecting_circle_brass_glass","item_variant":"undefined"},{"item_id":"MFR348307","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"lenoir_etienne_1744_1832","item_category5":"not_balown","item_list_name":"search_results","item_name":"portable_transit_instrument_c_1800_brass","item_variant":"undefined"},{"item_id":"BAL116092","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"egyptian_second_intermediate_period_c_1750_c_1650_bc","item_category5":"not_balown","item_list_name":"search_results","item_name":"detail_of_the_rhind_mathematical_papyrus_hyksos_period_15th_dynasty_c_1550_bc_papyrus_see_also_9712","item_variant":"undefined"},{"item_id":"MFR348312","item_category2":"in_copyright","item_category3":"standard","item_category4":"sneewins_anthony_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"two_parts_of_a_compedium_dial_c_1650_brass_glass","item_variant":"undefined"},{"item_id":"MFR348301","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"hadley_quadrant_with_transversal_scale_mahogany_brass_ivory","item_variant":"undefined"},{"item_id":"MFR348325","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"modern_reproduction_of_a_mariner_s_astrolabe_brass","item_variant":"undefined"},{"item_id":"MFR348318","item_category2":"in_copyright","item_category3":"standard","item_category4":"goater_fl_c_1770","item_category5":"not_balown","item_list_name":"search_results","item_name":"hadley_quadrant_left_c_1770_and_backstaff_right_c_1760_brass_wood_ivory","item_variant":"undefined"},{"item_id":"UIG5307494","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_merchant_and_his_clerk_using_a_calculating_table","item_variant":"undefined"},{"item_id":"MFR348349","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"hadley_s_quadrant_with_transversal_boxwood_scale_c_1750_brass_wood","item_variant":"undefined"},{"item_id":"GRP434399","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"wynne_henry_fl_1662_1709","item_category5":"not_balown","item_list_name":"search_results","item_name":"sundial_plate_c_1690_brass","item_variant":"undefined"},{"item_id":"DMA1072058","item_category2":"in_copyright","item_category3":"standard","item_category4":"hughes_malcolm_1920_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"a1_1984_pencil_on_graph_paper","item_variant":"undefined"},{"item_id":"XJF294097","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"german_school_16th_century_after","item_category5":"balown","item_list_name":"search_results","item_name":"a_volvelle_possibly_showing_the_cycles_of_the_moon_after_an_illustration_from_astronomicon_caesareum","item_variant":"undefined"},{"item_id":"XEE4149581","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_19th_century","item_category5":"balown","item_list_name":"search_results","item_name":"consumption_meter_for_the_use_of_lemonadiers_1862_engraving_in_le_monde_illustre_n_255_of_1_march_18","item_variant":"undefined"},{"item_id":"MFR348334","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"dollond_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"marine_barometer_with_wall_support_and_gimbals_in_wooden_case_with_instructions_c_1820_mahogany_bras","item_variant":"undefined"},{"item_id":"SZT3515470","item_category2":"no_copyright","item_category3":"standard","item_category4":"alfred_strobel","item_category5":"not_balown","item_list_name":"search_results","item_name":"high_school_1960_b_w_photo","item_variant":"undefined"},{"item_id":"MFR348316","item_category2":"in_copyright","item_category3":"standard","item_category4":"wright_thomas_fl_c_1740","item_category5":"not_balown","item_list_name":"search_results","item_name":"circumferentor_in_oak_case_c_1740_mixed_media","item_variant":"undefined"},{"item_id":"HST3083730","item_category2":"in_copyright","item_category3":"standard","item_category4":"cumming_robert_h_b_1943","item_category5":"not_balown","item_list_name":"search_results","item_name":"67_body_arc_off_circle_center_1975_gelatin_silver_contact_print_with_drawing","item_variant":"undefined"},{"item_id":"LLM5227045","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_photographer_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"mr_sol_stone_the_lightning_calculator_b_w_photo","item_variant":"undefined"},{"item_id":"LLM5227049","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_photographer_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"mr_sol_stone_the_lightning_calculator_b_w_photo","item_variant":"undefined"},{"item_id":"BOO228315","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"russian_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"sun_dial_c_1720_wood_ivory","item_variant":"undefined"},{"item_id":"TBM375963","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"chosui_yabu_fl_c_1860_1930","item_category5":"not_balown","item_list_name":"search_results","item_name":"compass_and_branch_of_flowering_cherry_c_1930_woodblock_print","item_variant":"undefined"},{"item_id":"XJF359014","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"delaram_francis_c_1590_1627","item_category5":"balown","item_list_name":"search_results","item_name":"portrait_of_a_gentleman_believed_to_be_thomas_harriot_c_1620_engraving","item_variant":"undefined"},{"item_id":"UIS3527176","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"scheutz_edvard_1821_81_scheutz_per_georg_1785_1873","item_category5":"not_balown","item_list_name":"search_results","item_name":"detail_of_the_scheutz_difference_engine_no_3_1859_metal","item_variant":"undefined"},{"item_id":"FLO4630528","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_payment_of_the_grudge_to_ottoman_sultan_bayezid_i_or_bajazet_1360_1403_for_the_liberation_of_joh","item_variant":"undefined"},{"item_id":"UIG5310951","item_category2":"undetermined_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_burroughs_adding_machine_which_printed_on_a_roll_20th_century","item_variant":"undefined"},{"item_id":"LLM3627176","item_category2":"no_copyright","item_category3":"standard","item_category4":"french_photographer_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"division_b_w_photo","item_variant":"undefined"},{"item_id":"DMA1072059","item_category2":"in_copyright","item_category3":"standard","item_category4":"hughes_malcolm_1920_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"a2_1984_pencil_on_graph_paper","item_variant":"undefined"},{"item_id":"MFR348305","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"backstaff_lignum_vitae_boxwood","item_variant":"undefined"},{"item_id":"MFR348306","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"backstaff_lignum_vitae_boxwood","item_variant":"undefined"}]}}

{"event":"custom_event","event_name":"view_search_result","event_category":"browse_catalog","keyword":"calculation","search_type":"standard","search_bridgeman_artists":"false","search_mode":"automatic","search_zero_result":"false","search_results":388,"search_results_page_number":1}